Write operation of a drive is inhibited by setting a jumper on JP165, pin7-8 (Write Protect mode), which condition will generate ATTENTION status upon receiving of WRITE GATE-N signal.

Application : PCB Rev. 1 more Jumper Location

JP165 (pin 7-8)
Function	Write Enable	Write Protect

* A drive as shipped is set as "Write Enable".

Fig. 2-11 Jumper Setting for Write Protect (SZ905)